I want to cut a hole into the black plastic wall behind the ash tray and HVAC controls (as pictured). The red square is about where I want to cut maybe a bit lower. I am fitting some cup holders where the ash sits. I need more space into that wall about 1/2" I was planning on putting a sealant around the hole to plug any leaks.

What is behind there, an air vent? Can I cut into it?